Calculator help

Basics

• Variables are single lowercase letters. x and y are the graph axes.
• Functions start with a capital letter: Sin(x), not sin(x).
• Press Enter for a new row. Unclosed brackets are shown in grey and closed automatically.
• Choose radians or degrees in Settings.

Entering things

y=2x+1	Graph a function
x^2+y^2=25	Graph an equation
a=3	Define a variable for other rows
x^2-4=0	Solve for the variable
{x+y=3, x-y=1}	Solve a system (commas or new lines)
{x+2=0}[x]	Use one variable of a solution as a value

Algebra

Exp(expr)	Expand, e.g. Exp((x+1)^2)
Fac(expr)	Factorise, e.g. Fac(x^2+5x+6)
Dec(n, expr)	Decimal value to n places

Powers, roots & logs

Sqrt(x) Cbrt(x)	Square / cube root
Root(n, x)	n-th root
Pow(x, n)	x to the power n (same as x^n)
Ln(x)	Natural log
Log(b, x)	Log of x in base b
Hypot(a, b, …)	√(a² + b² + …)

Trigonometry

Sin Cos Tan Sec Csc Cot	Trig functions
Asin Acos Atan Asec Acsc Acot	Inverse trig
Atan2(y, x)	Angle of the point (x, y)
Sinh Cosh Tanh Asinh Acosh Atanh	Hyperbolic
Ang(x)	Treat x as degrees

Numbers

Abs(x) Sign(x)	Absolute value / sign
Floor(x) Ceil(x) Round(x)	Rounding
Min(a, b, …) Max(a, b, …)	Smallest / largest
Mod(a, b)	Remainder of a ÷ b
Fact(n)	Factorial n!
Gcd(a, b) Lcm(a, b)	Greatest common divisor / lowest common multiple

Constants

Pi() or π	3.14159…
E()	2.71828… (use E()^x for eˣ)
I()	Imaginary unit